Heat insulation structure of compressor and compressor

Abstract

The invention relates to the technical field of compressors, and provides a heat insulation structure of a compressor and the compressor. The compressor comprises a low-pressure-stage assembly and a high-pressure-stage assembly which are arranged along the axis of a crankshaft, and first heat insulation grooves are formed in all parts of the low-pressure-stage assembly; and the projections of the first heat insulation grooves on the two adjacent parts in the low-pressure stage assembly are mutually staggered and are not overlapped. In this way, the contact area of all parts in the low-pressure-stage assembly can be reduced, the transfer efficiency of heat in the low-pressure-stage assembly is reduced, and further, when heat of the high-pressure-stage assembly is transferred to one side of the low-pressure-stage assembly, the heat conduction effect is reduced due to the fact that the first heat insulation groove is formed in the low-pressure-stage assembly; a refrigerant in the low-pressure-stage assembly is prevented from being affected by heat released by the high-pressure-stage assembly and expanding in advance, and the acting performance of the refrigerant is prevented from being affected.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and particularly to a heat insulation structure of a compressor. Background Art

[0002] At present, most rotary compressors are designed with high back pressure. The area between the housing and the pump body is filled with high-pressure and high-temperature refrigerant compressed and discharged by the pump body. There is already a temperature difference between the refrigerant outside the pump body and the refrigerant inside the pump body itself. In addition, when using multi-stage compression, except for the refrigerant inside the compression chamber of the last stage of compression (referred to as high-pressure stage compression), the exhaust temperature of the high-pressure stage compression is higher than that of other stages of compression (referred to as low or medium-pressure stage compression). When multi-stage compression is combined with injection enthalpy increase, there is also a large temperature difference between the injection refrigerant and the exhaust refrigerant of the low or medium-pressure stage compression in the mixing chamber and the exhaust temperature of the last high-pressure stage compression.

[0003] Taking a two-stage compression injection enthalpy compressor as an example, when using R32 refrigerant for suction and discharge pressures of 0.45 Mpa and 2.665 Mpa, the suction and discharge temperatures of the first-stage compression are -17°C and 34°C respectively; after adding injection, the suction temperature of the second-stage compression is 21°C, and the temperature of the exhaust of the second-stage compression into the pump body housing is 80°C. Even if only considering the temperature difference between the suction of the second-stage compression in the mixing chamber and the temperature in the final compressor pump body housing, the temperature difference reaches nearly 50°C; if considering the temperature difference between the suction of the first-stage compression and the exhaust of the second-stage compression, it can reach nearly 100°C. Similar problems also exist when using multi-stage compression. The heat transfer from the exhaust refrigerant of the high-pressure stage compression to the refrigerant inside the low or medium-pressure stage compression cylinder, or the heat transfer from the exhaust of the high-pressure stage compression to the components between the cylinders including the mixing chamber, will cause the low-temperature refrigerant to expand due to heat in advance, affecting the work quality.

[0004] Therefore, there is an urgent need for a heat insulation structure of a compressor and a compressor to solve the above technical problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a heat insulation structure of a compressor, which can inhibit heat transfer and thus improve the work quality.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] A heat insulation structure of a compressor, the compressor includes a low-pressure stage component and a high-pressure stage component arranged along the axis of the crankshaft, the refrigerant sequentially enters the above low-pressure stage component and the above high-pressure stage component to do work, and the heat released during work in the above high-pressure stage component is higher than the heat released during work in the above low-pressure stage component. First heat insulation grooves are provided on each component of the above low-pressure stage component, and in a plane perpendicular to the above crankshaft, the projections of the above first heat insulation grooves on two adjacent above components in the above low-pressure stage component intersect and do not overlap with each other.

[0008] As a preferred technical solution of the heat insulation structure of the above compressor, the low-pressure stage assembly includes a low-pressure stage cylinder and a low-pressure stage cylinder head connected in sequence along the axis of the above crankshaft. A first heat insulation groove A is provided on the above low-pressure stage cylinder, and a first heat insulation groove B is provided on the above low-pressure stage cylinder head. On a plane perpendicular to the above crankshaft, the projection of the first heat insulation groove A and the projection of the first heat insulation groove B intersect and do not overlap with each other.

[0009] As a preferred technical solution of the heat insulation structure of the above compressor, the above compressor further includes a partition member. The partition member is located between the low-pressure stage assembly and the high-pressure stage assembly. The partition member includes a main body and a first cover plate. A mixing chamber and a second heat insulation groove are provided on the main body. On a plane perpendicular to the above crankshaft, the projection of the first heat insulation groove of the component in the low-pressure stage assembly closest to the partition member and the projection of the second heat insulation groove intersect and do not overlap with each other.

[0010] As a preferred technical solution of the heat insulation structure of the above compressor, the above compressor further includes an intermediate-pressure stage assembly. The intermediate-pressure stage assembly is provided between the partition member and the high-pressure stage assembly. Third heat insulation grooves are provided on each component of the intermediate-pressure stage assembly. On a plane perpendicular to the above crankshaft, the projections of the third heat insulation grooves on two adjacent components in the intermediate-pressure stage assembly intersect and do not overlap with each other, and the projection of the third heat insulation groove of the component in the intermediate-pressure stage assembly closest to the partition member and the projection of the second heat insulation groove intersect and do not overlap with each other.

[0011] As a preferred technical solution of the heat insulation structure of the above compressor, the above compressor further includes an intermediate-pressure stage assembly and a partition member. Along the axis of the above crankshaft, the high-pressure stage assembly, the intermediate-pressure stage assembly, the partition member, and the low-pressure stage assembly are arranged in sequence. Third heat insulation grooves are provided on each component of the intermediate-pressure stage assembly. On a plane perpendicular to the above crankshaft, the projections of the third heat insulation grooves on two adjacent components in the intermediate-pressure stage assembly intersect and do not overlap with each other.

[0012] As a preferred technical solution of the heat insulation structure of the above compressor, the above compressor further includes a second cover plate and a baffle. The second cover plate is located on the side of the low-pressure stage assembly facing away from the high-pressure stage assembly. A fourth heat insulation groove is provided on the second cover plate. The baffle is fixed to the side of the second cover plate facing away from the low-pressure stage assembly for blocking the fourth heat insulation groove.

[0013] As a preferred technical solution of the heat insulation structure of the above compressor, a heat insulation medium is provided in the fourth heat insulation groove.

[0014] As a preferred technical solution of the heat insulation structure of the above compressor, a heat insulation medium is provided in the first heat insulation groove.

[0015] As a preferred technical solution of the heat insulation structure of the above compressor, a heat insulation layer is provided on the outer peripheral wall of the low-pressure stage assembly.

[0016] A compressor is also provided, including the heat insulation structure of the above compressor, as well as the high-pressure stage assembly and the motor. The high-pressure stage assembly includes a high-pressure stage cylinder and a high-pressure stage cylinder head, and the high-pressure stage cylinder head is located on the side of the high-pressure stage cylinder close to the motor.

[0017] Beneficial effects of the present invention:

[0018] The present invention provides a heat insulation structure of a compressor and a compressor. The compressor includes a low-pressure stage assembly and a high-pressure stage assembly arranged along the axis of the crankshaft. The refrigerant sequentially enters the low-pressure stage assembly and the high-pressure stage assembly to do work, and the heat released during work in the high-pressure stage assembly is higher than that released during work in the low-pressure stage assembly. It is characterized in that first heat insulation grooves are provided on each component of the low-pressure stage assembly, and in a plane perpendicular to the crankshaft, the projections of the first heat insulation grooves on two adjacent components in the low-pressure stage assembly are staggered and do not overlap.

[0019] Exemplarily, the low-pressure stage assembly includes a first component and a second component arranged in sequence along the axis of the crankshaft. The first component is provided with a first heat insulation groove A, and the second component is provided with a first heat insulation groove B. In a plane perpendicular to the crankshaft, the projection of the first heat insulation groove A and the projection of the first heat insulation groove B are staggered and do not overlap. In this way, the contact area between the components in the low-pressure stage assembly can be reduced, and the heat transfer efficiency in the low-pressure stage assembly can be reduced. Further, when the heat of the high-pressure stage assembly is transferred to the side of the low-pressure stage assembly, due to the first heat insulation grooves provided in the low-pressure stage assembly, the heat conduction effect is reduced, so that the refrigerant in the low-pressure stage assembly is prevented from being affected by the heat released by the high-pressure stage assembly and expanding in advance, which affects its work performance. Description of the drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments of the present invention. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the content of the embodiments of the present invention and these drawings.

[0021] Figure 1 It is a schematic structural diagram of the heat insulation structure of the compressor provided by the embodiment of the present invention;

[0022] Figure 2 It is a schematic structural diagram of the main body provided by the embodiment of the present invention;

[0023] Figure 3 It is a schematic structural diagram of the low-pressure stage cylinder provided by the embodiment of the present invention;

[0024] Figure 4 It is a schematic structural diagram of a low-pressure stage cylinder head provided by an embodiment of the present invention;

[0025] Figure 5 It is a schematic structural diagram of a second cover plate provided by an embodiment of the present invention;

[0026] Figure 6 It is a schematic diagram of a multi-cylinder structure of a low-pressure stage provided by an embodiment of the present invention.

[0027] In the figure:

[0028] 10. Low-pressure stage assembly;

[0029] 11. Low-pressure stage cylinder; 11a. First low-pressure stage cylinder; 11b. Second low-pressure stage cylinder; 111. First heat insulation groove A; 12. Low-pressure stage cylinder head; 121. First heat insulation groove B;

[0030] 20. High-pressure stage assembly; 21. High-pressure stage cylinder; 22. High-pressure stage cylinder head;

[0031] 30. Partition member; 31. Main body; 311. Mixing chamber; 312. Second heat insulation groove; 32. First cover plate;

[0032] 40. Second cover plate; 41. Fourth heat insulation groove; 50. Baffle. Detailed implementation manners

[0033] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. In addition, it should be noted that for the convenience of description, only parts related to the present invention are shown in the drawings, rather than all the structures.

[0034] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0035] In the present invention, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include the first and second features not being in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is less than that of the second feature.

[0036] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0037] As Figures 1 to 6 shown, the present invention provides a heat insulation structure for a compressor. The compressor includes a low-pressure stage assembly 10 and a high-pressure stage assembly 20 arranged along the axis of the crankshaft. The refrigerant sequentially enters the low-pressure stage assembly 10 and the high-pressure stage assembly 20 to do work, and the heat released during work in the high-pressure stage assembly 20 is higher than the heat released during work in the low-pressure stage assembly 10. It is characterized in that first heat insulation grooves are formed on each component of the low-pressure stage assembly 10, and in a plane perpendicular to the crankshaft, the projections of the first heat insulation grooves on two adjacent components in the low-pressure stage assembly 10 intersect and do not overlap with each other.

[0038] Exemplarily, the low-pressure stage assembly 10 includes a first component and a second component arranged in sequence along the axis of the crankshaft. The first component is provided with a first heat insulation groove A111, and the second component is provided with a first heat insulation groove B121. In a plane perpendicular to the crankshaft, the projection of the first heat insulation groove A111 intersects with the projection of the first heat insulation groove B121 and does not overlap with each other. In this way, the contact area between the components in the low-pressure stage assembly 10 can be reduced, and the heat transfer efficiency in the low-pressure stage assembly 10 can be lowered. Further, when the heat of the high-pressure stage assembly 20 is transferred to the side of the low-pressure stage assembly 10, due to the first heat insulation grooves formed in the low-pressure stage assembly 10, the heat conduction effect is reduced, so that the refrigerant in the low-pressure stage assembly 10 is prevented from being affected by the heat released by the high-pressure stage assembly 20 and expanding prematurely, which affects its work performance.

[0039] Optionally, the low-pressure stage assembly 10 includes a low-pressure stage cylinder 11 and a low-pressure stage cylinder head 12 that are sequentially connected along the axis of the crankshaft. A first heat insulation groove A111 is provided on the low-pressure stage cylinder 11, and a first heat insulation groove B121 is provided on the low-pressure stage cylinder head 12. In a plane perpendicular to the crankshaft, the projection of the first heat insulation groove A111 and the projection of the first heat insulation groove B121 intersect and do not overlap with each other.

[0040] Exemplarily, the axial two end faces of the low-pressure stage cylinder 11 are respectively denoted as the upper end face and the lower end face of the low-pressure stage cylinder 11. The first heat insulation groove A111 forms a first upper heat insulation portion A on the upper end face of the low-pressure stage cylinder 11, and / or forms a first lower heat insulation portion A on the lower end face of the low-pressure stage cylinder 11; the axial two end faces of the low-pressure stage cylinder head 12 are respectively denoted as the upper end face and the lower end face of the low-pressure stage cylinder head 12. The first heat insulation groove B121 forms a first upper heat insulation portion B on the upper end face of the low-pressure stage cylinder head 12, and / or forms a first lower heat insulation portion B on the lower end face of the low-pressure stage cylinder head 12. Among them, the lower end face of the low-pressure stage cylinder 11 and the upper end face of the low-pressure stage cylinder head 12 are axially adjacent to the crankshaft, that is, the projection of the first lower heat insulation portion A and the projection of the first upper heat insulation portion B are staggered and do not coincide in a plane perpendicular to the crankshaft.

[0041] Further, the low-pressure stage cylinder 11 is provided with a plurality of first heat insulation grooves A111 around the axis of the crankshaft, and the low-pressure stage cylinder head 12 is provided with a plurality of first heat insulation grooves B121 around the axis of the crankshaft.

[0042] Optionally, the compressor further includes a partition member 30. The partition member 30 is located between the low-pressure stage assembly 10 and the high-pressure stage assembly 20. The partition member 30 includes a main body 31 and a first cover plate 32. A mixing chamber 311 and a second heat insulation groove 312 are provided on the main body 31. In a plane perpendicular to the crankshaft, the projection of the first heat insulation groove of the component closest to the partition member 30 in the low-pressure stage assembly 10 and the projection of the second heat insulation groove 312 intersect and do not overlap with each other.

[0043] Exemplarily, the first cover plate 32 is installed between the main body 31 and the high-pressure stage assembly 20. The axial two ends of the main body 31 are respectively denoted as the upper end face and the lower end face of the main body 31. The second heat insulation groove 312 can form a second upper heat insulation portion on the upper end face of the main body 31, and / or form a second lower heat insulation portion on the lower end face of the main body 31. The setting of the second upper heat insulation portion can reduce the contact area between the main body 31 and the high-pressure stage assembly 20 and reduce the heat transfer efficiency from the high-pressure stage assembly 20 to the partition member 30. The setting of the second lower heat insulation portion can reduce the contact area between the main body 31 and the low-pressure stage assembly 10, and further reduce the heat transfer efficiency from the high-pressure stage assembly 20 to the low-pressure stage assembly 10.

[0044] Exemplarily, the lower end face of the main body 31 is axially adjacent to the upper end face of the low-pressure stage cylinder 11 with respect to the crankshaft. Then, the second lower heat insulation portion and the first upper heat insulation portion A are staggeredly arranged and do not overlap in the projection on the plane perpendicular to the crankshaft. In this way, the contact area between the main body 31 and the low-pressure stage assembly 10 can be further reduced, thereby reducing the heat transfer efficiency from the high-pressure stage assembly 20 to the low-pressure stage assembly 10.

[0045] Optionally, the compressor further includes an intermediate-pressure stage assembly. The intermediate-pressure stage assembly is arranged between the partition member 30 and the high-pressure stage assembly 20. Third heat insulation grooves are provided on each component of the intermediate-pressure stage assembly. In the plane perpendicular to the crankshaft, the projections of the third heat insulation grooves on two adjacent components in the intermediate-pressure stage assembly are staggeredly arranged and do not overlap, and the projection of the third heat insulation groove on the component closest to the partition member 30 in the intermediate-pressure stage assembly is staggeredly arranged and does not overlap with the projection of the second heat insulation groove 312.

[0046] Exemplarily, the refrigerant for doing work can sequentially pass through the low-pressure stage assembly 10, the intermediate-pressure stage assembly, and the high-pressure stage assembly 20. Let the heat released by the refrigerant when doing work in the high-pressure stage assembly 20 be T1, the heat released by the refrigerant when doing work in the intermediate-pressure stage assembly be T2, and the heat released by the refrigerant when doing work in the low-pressure stage assembly 10 be T3, satisfying T1 > T2 > T3.

[0047] Exemplarily, the axial end faces of the intermediate-pressure stage assembly are respectively denoted as the upper end face and the lower end face of the intermediate-pressure stage assembly. The third heat insulation groove can form a third upper heat insulation portion on the upper end face of the intermediate-pressure stage assembly and / or form a third lower heat insulation portion on the lower end face of the intermediate-pressure stage assembly. The setting of the third upper heat insulation portion can reduce the contact area between the intermediate-pressure stage assembly and the high-pressure machine assembly and reduce the heat transfer between the two. The setting of the third lower heat insulation portion can reduce the contact area between the intermediate-pressure stage assembly and the low-pressure stage assembly 10 and reduce the heat transfer between the two.

[0048] Further, the lower end face of the intermediate-pressure stage assembly is axially adjacent to the upper end face of the partition member 30 with respect to the crankshaft. The projection of the third heat insulation groove is staggeredly arranged and does not overlap with the projection of the second heat insulation groove 312, which can further reduce the contact area between the intermediate-pressure stage assembly and the partition member 30 and reduce the heat transfer efficiency between the two.

[0049] Optionally, the compressor further includes an intermediate-pressure stage assembly and a partition member 30. Along the axis of the crankshaft, the high-pressure stage assembly 20, the intermediate-pressure stage assembly, the partition member 30, and the low-pressure stage assembly 10 are sequentially arranged. Third heat insulation grooves are provided on each component of the intermediate-pressure stage assembly. In the plane perpendicular to the crankshaft, the projections of the third heat insulation grooves on two adjacent components in the intermediate-pressure stage assembly are staggeredly arranged and do not overlap.

[0050] Optionally, the compressor further includes a second cover plate 40 and a baffle 50. The second cover plate 40 is located on the side of the low-pressure stage assembly 10 facing away from the high-pressure stage assembly 20. A fourth heat insulation groove 41 is provided on the second cover plate 40. The baffle 50 is fixed to the side of the second cover plate 40 facing away from the low-pressure stage assembly 10 and is used to block the fourth heat insulation groove 41.

[0051] Exemplarily, a fourth heat insulation groove 41 is formed on the side of the second cover plate 40 facing away from the low-pressure stage assembly 10. The fourth heat insulation groove 41 can prevent the external high-temperature refrigerant from transferring heat to the inside of the low-pressure stage assembly 10 through the second cover plate 40. The second cover plate 40 is provided with a plurality of second connection holes, and the plurality of second connection holes are spaced apart around the axis of the main journal of the crankshaft. The baffle 50 is connected to the second cover plate 40 through a threaded fastener. After the threaded fastener penetrates the baffle 50, a part of it is inserted into the second connection hole and threadedly connected to the second cover plate 40. After assembly, a part of the baffle 50 blocks the opening of the fourth heat insulation groove 41, so that the heat insulation medium is not easily withdrawn from the fourth heat insulation groove 41.

[0052] Optionally, a heat insulation medium is provided in the fourth heat insulation groove 41.

[0053] Exemplarily, the heat insulation medium is a heat insulation material with a relatively small thermal conductivity. Specifically, the material of the heat insulation medium can be selected as a material with a thermal conductivity less than or equal to 2. Generally, parts such as cylinders and cylinder heads are made of cast iron, and its thermal conductivity is about 48. Experiments have proved that when the heat insulation medium uses a material with a thermal conductivity less than 2, such as high-temperature resistant PPT plastic, clay, ceramic or others, it can effectively slow down the transfer of heat in the high-temperature area inside the compressor housing to the compression chamber, thereby increasing the compression ratio of the compressor by more than 2%. At the same time, since the sound wave propagation of PPT plastic, clay and ceramic is weaker than that of cast iron material, the heat insulation medium can also effectively prevent the noise in the compression chamber from being transmitted outward, thereby reducing the noise of the compressor.

[0054] Optionally, a heat insulation medium is provided in the first heat insulation groove.

[0055] Optionally, a heat insulation layer is provided on the outer peripheral wall of the low-pressure stage assembly 10.

[0056] Exemplarily, the heat insulation layer can be formed by spraying a heat insulation material on the main body 31, the low-pressure stage cylinder 11, the low-pressure stage cylinder head 12 and the second cover plate 40 and then curing it, so that the cylinder block structure is completely covered by the heat insulation material, further preventing the external high-temperature refrigerant from exchanging heat with the inside of the cylinder block structure, and thus increasing the compression ratio of the compressor.

[0057] There is also provided a compressor, including the heat insulation structure of the above-mentioned compressor, as well as a high-pressure stage assembly 20 and a motor. The high-pressure stage assembly 20 includes a high-pressure stage cylinder 21 and a high-pressure stage cylinder head 22. The high-pressure stage cylinder head 22 is located on the side of the high-pressure stage cylinder 21 close to the motor.

[0058] As Figure 6 shown, the low-pressure stage assembly 10 includes two low-pressure stage cylinders 11, denoted as the first low-pressure stage cylinder 11a and the second low-pressure stage cylinder 11b respectively, and both of the two low-pressure stage cylinders 11 are provided with first heat insulation grooves 111.

[0059] In addition, the above are only the preferred embodiments of the present invention and the applied technical principles. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein. Various obvious changes, re-adjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Without departing from the concept of the present invention, more other equivalent embodiments can be included, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. Thermal insulation structure of a compressor, the compressor comprising a low-pressure stage assembly (10) and a high-pressure stage assembly (20) arranged along the axis of a crankshaft, refrigerant sequentially enters the low-pressure stage assembly (10) and the high-pressure stage assembly (20) to do work, and the heat released by doing work within the high-pressure stage assembly (20) is higher than the heat released by doing work within the low-pressure stage assembly (10), characterized in that, Each component of the low-pressure stage assembly (10) is provided with a first heat insulation groove. In a plane perpendicular to the crankshaft, the projections of the first heat insulation grooves on two adjacent components in the low-pressure stage assembly (10) are staggered and do not overlap.

2. The heat insulation structure of the compressor according to claim 1, wherein The low-pressure stage assembly (10) includes a low-pressure stage cylinder (11) and a low-pressure stage cylinder head (12) connected in sequence along the axis of the crankshaft. The low-pressure stage cylinder (11) is provided with a first heat insulation groove A (111), and the low-pressure stage cylinder head (12) is provided with a first heat insulation groove B (121). In a plane perpendicular to the crankshaft, the projection of the first heat insulation groove A (111) and the projection of the first heat insulation groove B (121) are staggered and do not overlap.

3. The heat insulation structure of the compressor according to claim 1, characterized in that, The compressor further includes a partition member (30). The partition member (30) is located between the low-pressure stage assembly (10) and the high-pressure stage assembly (20). The partition member (30) includes a main body (31) and a first cover plate (32). The main body (31) is provided with a mixing chamber (311) and a second heat insulation groove (312). In a plane perpendicular to the crankshaft, the projection of the first heat insulation groove on the component in the low-pressure stage assembly (10) closest to the partition member (30) and the projection of the second heat insulation groove (312) are staggered and do not overlap.

4. The heat insulation structure of the compressor according to claim 3, characterized in that, The compressor further includes an intermediate-pressure stage assembly. The intermediate-pressure stage assembly is arranged between the partition member (30) and the high-pressure stage assembly (20). Each component of the intermediate-pressure stage assembly is provided with a third heat insulation groove. In a plane perpendicular to the crankshaft, the projections of the third heat insulation grooves on two adjacent components in the intermediate-pressure stage assembly are staggered and do not overlap, and the projection of the third heat insulation groove on the component in the intermediate-pressure stage assembly closest to the partition member (30) and the projection of the second heat insulation groove (312) are staggered and do not overlap.

5. The heat insulation structure of the compressor according to claim 1, characterized in that The compressor further includes an intermediate-pressure stage assembly and a partition member (30). Along the axis of the crankshaft, the high-pressure stage assembly (20), the intermediate-pressure stage assembly, the partition member (30), and the low-pressure stage assembly (10) are arranged in sequence. Each component of the intermediate-pressure stage assembly is provided with a third heat insulation groove. In a plane perpendicular to the crankshaft, the projections of the third heat insulation grooves on two adjacent components in the intermediate-pressure stage assembly are staggered and do not overlap.

6. The heat insulation structure of the compressor according to claim 1, wherein, The compressor further includes a second cover plate (40) and a baffle (50). The second cover plate (40) is located on the side of the low-pressure stage assembly (10) facing away from the high-pressure stage assembly (20). The second cover plate (40) is provided with a fourth heat insulation groove (41). The baffle (50) is fixed to the side of the second cover plate (40) facing away from the low-pressure stage assembly (10) for blocking the fourth heat insulation groove (41).

7. The heat insulation structure of the compressor according to claim 6, characterized in that, The fourth heat insulation groove (41) is provided with a heat insulation medium.

8. The heat insulation structure of the compressor according to claim 1, characterized in that, The first heat insulation groove is provided with a heat insulation medium.

9. The heat insulation structure of the compressor according to claim 1, characterized in that, The outer peripheral wall of the low-pressure stage assembly (10) is provided with a heat insulation layer.

10. Compressor, characterized in that, An insulation structure for a compressor according to any one of claims 1-9, and the high-pressure stage assembly (20) and the motor, the high-pressure stage assembly (20) including a high-pressure stage cylinder (21) and a high-pressure stage cylinder head (22), the high-pressure stage cylinder head (22) being located on a side of the high-pressure stage cylinder (21) close to the motor.

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